What type of issue is this?

Incorrect support data (ex. Chrome says "86" but support was added in "40")

What information was incorrect, unhelpful, or incomplete?

Firefox desktop compat for <datalist> lists full support v4+, but support is only partial

What browsers does this problem apply to, if applicable?

Firefox

What did you expect to see?

Same partial support indicator and note referencing bug 1535985 as Firefox for Android.

Did you test this? If so, how?

Compared the live MDN doc in desktop Firefox to desktop Chrome, and noted deficiencies in Firefox implementation

Can you link to any release notes, bugs, pull requests, or MDN pages related to this?

https://developer.mozilla.org/en-US/docs/Web/HTML/Element/datalist

https://bugzilla.mozilla.org/show_bug.cgi?id=1535985

Do you have anything more you want to share?

No response

MDN URL

https://developer.mozilla.org/en-US/docs/Web/HTML/Element/datalist

MDN metadata